Not work on windows

[AlynxZhou]

I am implementing HID over AOAv2 for scrcpy, and I found libusb does not work on Windows (related info is https://libusb-devel.narkive.com/vENuKzdR/getting-the-serial-number-of-the-camera-fails), it cannot open Android device and read infos. Then I found this project which starts android accessory first, and I've built this on Visual Studio 2019, run it. Got the same error that it cannot open device:

 > .\linux-adk.exe -N -d 04E8:6860
Looking for device 04e8:6860
Unable to open device...
Closing USB device

04E8:6860 is for my Galaxy S9+, did you test it for your phone on windows? How do you manage to make libusb work on Windows?

Plus, C macro for Windows is _WIN32, not WIN32.

[gibsson]

Maybe you need to open your terminal as administrator but here linux-adk for Windows works fine.
Can't reproduce on my end.

[AlynxZhou]

Still not work.

> .\linux-adk.exe -N -d 04E8:6860
Looking for device 04e8:6860
Unable to open device...
Closing USB device

Is there any other operation you do before run it?

[gibsson]

No, actually I confirm that on my end it works fine without admin rights:

linux-adk.exe -d 18d1:4ee7
Looking for device 18d1:4ee7
Device supports AOA 2.0!
Limiting AOA to version 1.0!
Sending identification to the device
 sending manufacturer: Google, Inc.
 sending model: DemoKit
 sending description: Demo ABS2013
 sending version: 2.0
 sending url: https://github.com/gibsson
 sending serial number: 0000000012345678
Turning the device in Accessory mode

Note that this is my libusb revision: f38f09da98acc63966b65b72029b1f7f81166bef

[AlynxZhou]

maybe it's vendor related? I don't have other phones to test...

[AlynxZhou]

maybe it's vendor related? I don't have other phones to test...

[gibsson]

Nah, the whole point of ADK is not to be vendor specific. But is your phone properly recognized in Windows Device Manager?
If not that's probably why libusb can't access it.
Then if it's recognized, are you use you're trying with the same version of libusb?

[AlynxZhou]

Nah, the whole point of ADK is not to be vendor specific. But is your phone properly recognized in Windows Device Manager?
If not that's probably why libusb can't access it.
Then if it's recognized, are you use you're trying with the same version of libusb?

I have a Samsuna Android Device (or something similiar).

[gibsson]

If you're not answering my questions I can't help you.

[AlynxZhou]

I mean it's recognized in Device Manager.

I'll try this version tomorrow.

[gibsson]

Do you have an update? If not I'll close this issue as can't repro.

[AlynxZhou]

Please close it because I am on vacation and cannot try it, I'll reopen if I can try and reproduce it.

[gibsson]

Sounds good, thanks for your feedback